You will have to trim it for exact match I wouldnt use thin wire though I would use say 10mm or 3/8" aluminium tube the thicker the tube the wider the bandwidth it covers and the shorter it will need to be trimmed for a good match.

I built this antenna from 1/4 inch copper brake pipe widely available.
2 plastic water pipe pieces to keep sleeve elements in proper distance.
You just drill 2 holes in plastic pipe and put copper elements through.
You connect coax to longer elements, hot to the top, braid to bottom. Do not forget to put some ferrite clamp-on cores on coax. We do not want it to be a part of antenna.
Chris

The ¼ wave for 2m is a surprisingly good match for a ¾ wave on UHF - very simple to produce, and very cheap.

As for ch25's design - it is a ¼ wave for 2m, with two parasitic half waves for UHF - I'm not quite sure what the radiation pattern would be, but certainly not circular - not sure what it's advantages are - it doesn't appear to have too many advantages, and mounting it would be interesting?